Know Your Environment. Protect Your Health.

Bromoform

Marston PWS

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

46

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
20190.352 ppb52ND - 0.880 ppb
20200.204 ppb92ND - 0.990 ppb
20210.158 ppb92ND - 0.800 ppb
2022ND90ND
2023ND90ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform is based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer, harm to reproduction and child development, and change to fetal growth and development .

ppb = parts per billion

All test results

Date Lab ID Result
2018-03-06AD17523ND
2018-05-02AD18671ND
2018-07-11AD29590ND
2018-07-25AD29289ND
2018-10-11AD35068ND
2019-01-08AD38381ND
2019-04-10AD466720.880 ppb
2019-07-11AD52717ND
2019-08-14AD51907ND
2019-10-17AD573790.880 ppb
2020-01-12AD60699ND
2020-01-12AD60698ND
2020-04-142004302ND
2020-04-142004303ND
2020-07-152012319ND
2020-07-152011774ND
2020-08-3120117730.990 ppb
2020-10-1820166440.850 ppb
2020-10-182016645ND
2021-01-102020244ND
2021-01-102020243ND
2021-04-122103857ND
2021-04-122103856ND
2021-07-112113867ND
2021-07-112113866ND
2021-07-1521138650.800 ppb
2021-10-1821181750.620 ppb
2021-10-182118176ND
2022-01-122121677ND
2022-01-122121678ND
2022-04-132204414ND
2022-04-132204415ND
2022-07-182214867ND
2022-07-182214868ND
2022-07-242214866ND
2022-10-102219709ND
2022-10-102219710ND
2023-01-082223379ND
2023-01-082223378ND
2023-04-122303544ND
2023-04-122303545ND
2023-07-192311777ND
2023-07-192311776ND
2023-07-302311775ND
2023-10-182316887ND
2023-10-182316888ND